Solar energy

Meet perovskite, the mystery mineral that could transform our solar energy future

Someday, solar panels may be light and cheap enough that they could be hung on a clothesline, thanks to a synthetic mineral called perovskite. Physicist Sam Stranks explains the...

This plane? This plane can fly for 118 hours

Here’s a riddle for you: A plane flew for five days and nights, staying airborne for 118 hours. But it didn’t use a single drop of fuel. How? Because it’s solar-powered. Carryin...

How to build a real energy revolution in Africa

TED Fellow David Moinina Sengeh explains why he’s bullish about the “microgrid.” Nearly 70% of the sub-Saharan African population doesn’t have electricity. That’s about 600 mill...